Definitions for "DEPTH OF FIELD"
This is the distance between the maximum and minimum plane in which a code reader is capable of reading symbols.
The area in front of and behind the object that appears in focus (sharp) on the screen. The depth of field being greater as the focal length decreases (wide angle lens would have a greater depth of field than a telephoto lens) , also the higher the F-stop and the smaller the the lens format the wider the depth of field.
The spatial area in a shot that is in focus. The depth of field is influenced by the aperture size, the lens' focal length and the point of focus. Also called depth of focus.
Keywords:  dpof, zoom, dpi, digital
Digital Zoom DPI DPOF
maximum change in axial position of an object producing acceptable image quality.